Antifriction-bearing



(No Model.)

E. S. LEAYGRAFT. ANTIPRIGTION BEARING.

No. 601,348, Patented Mar. 29, 1898.

INVENTOR @M4/4 @Wig/mum 24J ATTORNEY EDWIN IS. LEAYORAFT, OF JERSEY CITY, NEW JERSEY.

ANTlFRlCTlON-BEARING.

SPECIFICATION forming part of Lettere retent No. 601,848, dated Meren 29, 1888.k

Application tied April 27, 1897.

' To all whom, t may concern:

Be it known that I, EDWIN S. LEAYCRAFT,

Vof'Jersey City, in the county of Hudson and State of New Jersey, have invented a certain new and useful Improvement in Antifrictionl cation.

My invention relates-to antifriction-bearings designed especially for use in bicycles or other vehicles, and is particularly directed toward providing a construction embracing but few parts, whose active members are relatively adjustable and readily separated one from the other for the purpose of inspection, whose wearing-surfaces are thoroughly lubrif cated, and a construction wit-hal possessing dust-proof qualities. v

I will describe an antifriction-bearing embracing the features of my invention and then define the novelty in claims.

In the accompanying drawings, Figure l is alongitudinal view, mainly in section, of such a bearing. Fig. 2 is an end elevation of the bearing represented in Fig. l. Fig. 3 is a cross-section on the line 3 3, Fig. l, looking in the direction of the arrow. Fig. tis an enlarged detail view, mainly in section, of one end of the bearing.

Similar letters of reference designate corresponding parts in all figures.

A designates the hub of the vehicle-wheel* for instance, a bicycle-wheel. This hub is preferably tubular or barrel-like in form and constitutes a reservoir for a suitable lubricant and is provided with shoulders ct', formed by set-o portions a2, made at each end of the hub, against which shoulders abut the flanges ct for attaching the spokes. Said lianges may be shrunk or otherwise secured to the hub.

Rigidly secured to the hub A are the cups B, constituting one member of the bearing and conveniently made in` the form of caps screwed into the ends of the hub and each provided with a central aperture through which extends the axle O.

There is arranged in juxtaposition toeach cup B a cone B', between the conical surface of which and the surface of the ball-race formed on the interior surface of the cup B the antifriction-balls h are borne. The surface of the cups B opposed to the cone against which the Serial No. 634,107. (No model.)

balls ilnpinge is made with a portion approximately parallel with the cone-surface, so that the balls may have some lateral play and not always take `the same circumferential path. The cones B constitute the remaining member of the bearing and are preferably adjustable lengthwise of the axle C. To this end the cones are engaged by screw-threads with correspondingly-formed portions of the axle C, along which they therefore may be adjusted, being firmly held in an adjusted position by lock-nuts c.

To prevent the dropping out of the balls from the circular channel in the cup B when the latter is disconnected and removed, there is provided a retaining-ring D at the rear exextremity of the cup, which may consist of a split ring sprung into place and held in a groove d, and a sleeve b', screwed into the opening in the cup, through which projects the axle, said threaded sleeve acting in conjunction with the ring D to retain the balls in the ball-race during the assembling of the parts. To facilitate the passage of the lubricant contained in the hub A to the active surfaces of the bearing, the outer edge of the ring D is provided with one or more perforafectually prevent this from occurring,'theg axle C is encircled by a washer E, of felt,

leather, or other appropriate material, which may be forced against the face of the cup beyond the edges of the central opening therein by a nut E', provided with an inwardly-projectin g annular extension e, which affords an extended threaded surface of thenut E. The washer E is seated in an annular groove in the nut E, from which it projects laterally, extending around' the nut E and filling the space between the nut E and the cup B.

F are nuts for securing the axle C in position.

It will be seen that by this construction an absolutely dust-proof bearing is obtained, as the washer E, seated in the nut E and pro- IOO l. In an antifriction-bearing, the combina-fv tion with an axle and a hub, of a cone, a cup screwed into the hub and provided with an annular groove, an annular sleeve secured to said cup at the axle-opening, a split ring sprung into the groove aforesaid and provided at itsr periphery with one or more notches or openings, said cup and annular sleeve and ring constituting a ball-race, antifriction-balls in said race, a nut screwed on the axle, and a Washer of a dust-proof material intermediate the nut and the cup and extending beyond the outer edge of said nut, substantially as specified.

2. In an antifriction-bearing, the combination with an axle, and a hub, of a cone, a cup screwed intothe hub and provided with an annular groove, an annular sleeve secured to said cup at the axle-opening, a split ring sprung into the groove aforesaid and provided at its periphery With one or more notches or openings, said cup and annular sleeve and ring constitutingaball-race,antifriction-balls in said race, a nut screwed on the axle and provided with an inwardly-projecting annular extension, and a washer of a dust-proof material intermediate'the nut and the cup and extending beyond the outer edge of said nut, substantially as specified.

3. In an antfriction-bearing, the combination with an axle, and a hub, of a cone, a cup screwed into the hub and provided with an annular groove, an annular sleeve secured to said cup at the axle-opening, a split-ring sprung into the groove aforesaid and provided at its periphery with one or more notches or openings, said cup and annular sleeve and ring constituting a ball-race,antifriction-balls in said race, a nut screwed on the axle and provided with an inwardly-projecting annular extension, said nut having an annular groove or recess on its inner face, and a Washer `oi dust-proof material seated in said recess and extending beyond the outer edge of said nut, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDWIN S. LEAYCRAFT.

Witnesses:

` ERNEST HOPKINSON,

FRANCES A. SPERRY. 

